Trickstar Narkissus (MP18-EN107) [2018 Mega-Tins Mega Pack]

If your opponent takes effect damage (except during the Damage Step): You can Special Summon this card from your hand. You can only use this effect of "Trickstar Narkissus" once per turn. Each time your opponent activates a monster effect in their hand or GY, inflict 200 damage to them immediately after it resolves.